Good gravy, is this a harrowing video. To capture close-up footage of this lava lake on the Pacific island of Vanuatu, Geoff Mackley and his colleagues had to brave excruciating heat and some rather precarious-looking abseiling. Here's his description of this mind-blowing footage, which offers the scenic views of a James Bond villain's veranada:

Geoff Mackley, Bradley Ambrose, Nathan Berg, after an epic struggle with the weather for 35 days, we became the first people ever to get this close to Marum Volcano's famed lava lake on Ambrym Island, Vanuatu. Coming within 30 metres of the lava lake down a watercourse, it was possible to stand the heat for only 6 seconds. With Fire Brigade breathing apparatus and heat proof proximity suit it was possible to stand on the very edge and view the incredible show for over 40 minutes.